1. Visuospatial Construction
Carolyn B. Mervis, Byron F. Robinson, John R. Pani 
The American Journal of Human Genetics 
Volume 65, Issue 5, Pages (November 1999)
DOI: /302633
Copyright © 1999 The American Society of Human Genetics Terms and Conditions

2. Figure 1
DAS cubes and examples of patterns to be constructed. Each cube has one solid white side, one solid black side, two sides divided diagonally into white and black triangles, and two sides divided vertically into white and black rectangles. Note that the participant is always given the correct number of cubes for the pattern he or she is to construct.
The American Journal of Human Genetics  , DOI: ( /302633)
Copyright © 1999 The American Society of Human Genetics Terms and Conditions

3. Figure 2
Two drawings of a bicycle by a girl with Williams syndrome, aged 9 years 7 months (top), and 3 years later, aged 12 years 11 months (bottom). In both cases, the child was given a blank piece of paper and asked to draw the best bicycle that she could. The labels on the top drawing were provided spontaneously by the child.
The American Journal of Human Genetics  , DOI: ( /302633)
Copyright © 1999 The American Society of Human Genetics Terms and Conditions